The OIE’s approach to zones and compartments

David WilsonDirector International Trade

OIE

Workshop on OIE international standardsBeijing 2005

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zoning/compartmentalisation

‘zoning’ and ‘regionalisation’ have the same meaning – ‘zoning’ is now used

zoning and compartmentalisation are procedures implemented by a country to define sub-populations of different animal health

status within its territory in accordance with the recommendations in the OIE

Codes for the purpose of international trade

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zoning/compartmentalisation

zoning/compartmentalisation allows a concentration of resources where there is greatest chance of success in controlling or eradicating a disease gaining or maintaining market access for certain

commodities

where freedom of the whole country from the disease is not possible or practicable

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zoning/compartmentalisation

zoning applies to an animal sub-population defined on a geographical basis

compartmentalisation applies to an animal sub-population defined by management practices relating to biosecurity

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OIE definitions

Zone/Region a clearly defined part of a country …

Compartment one or more establishments (premises in which

animals are kept) under a clearly defined common biosecurity management system …

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OIE definitions

… containing an animal sub-population with a distinct health status with respect to a specific disease or diseases for which required surveillance, control and biosecurity measures have been applied for the purpose of international trade

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application of the concepts

the extent of a zone is established on the basis of natural, artificial or legal boundaries

the requirements for a compartment are established on the basis of management practices relating to biosecurity

by the Veterinary Administration

geographic considerations and sound management practices play a role in the application of both concepts

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FREE ZONE

FREE ZONE

BUFFERZONE

railway

major road

river

zones

BUFFER

ZONE

INFECTED ZONE

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BREEDINGFLOCK

BREEDINGFLOCK

FEEDSUPPLY

GROWINGFLOCK

SLAUGHTERHOUSE

GROWINGFLOCK

Equipment

Birds

Equipm

ent

Birds

Equipment

Equ

ipm

ent

Fee

dEquipment

Compartment

Equipment

Birds

Feed

Feed

Equipment

Birds

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application of the concepts

there are Code recommendations for zones and compartments for diseases for which the concepts are appropriate

the recommendations depend on epidemiology of the disease environmental factors appropriate and applicable biosecurity measures necessary surveillance

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epidemiology

how does the disease spread ? by live animals / humans ? by meat / eggs / semen ? by farm or veterinary equipment ? by wind ? by biting insects ?

what species does it affect ? clinical signs ?

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environmental factors

temperature / humidity natural barriers

ocean / major river mountain range

artificial barriers state / county boundary road / rail system

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biosecurity measures

management regulations re biosecurity dedicated equipment staff showering in-and-out animals housed vs free range imposed movement controls

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surveillance

necessary surveillance for presence / absence of pathogen prevalence of disease seasonal factors eg biting insects strains of virus eg FMD intermediate hosts eg tick-borne diseases

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application of the concepts

a Veterinary Administration must document the measures taken to identify the animal sub-population recognise its distinct health status maintain its distinct health status

dossier will be as detailed as situation requires compartmentalisation requires good cooperation

and trust between industry and govt

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animal sub-population

dairy cattle herds in 4 adjacent counties bison and buffalo in Alberta wild pig population in a forest in Germany poultry flocks managed by Tysons Inc

as a unit wild waterfowl in a water catchment area during

the breeding season beef cattle over 3 years of age in the UK

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examples of health status

infected free with vaccination free without vaccination seasonally free unknown

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application of the concepts

if an exporting country wants to define a zone or compartment within its territory for an OIE-listed disease, it needs to implement the recommendations stipulated in the Code for setting up and maintaining such a zone or compartment or equivalent measures

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application of the concepts

an importing country should recognise the existence of this zone or compartment, subject to the application of the appropriate recommendations in the Code

with regard to the importation, or transit through its territory, of commodities from that zone or compartment

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Uses

in disease control / erradication campaign progressive zoning/compartmentalisation allows

stepwise approach allows concentration of resources where greatest

chance of success

in trade zone to gain / maintain market access for certain

commodities where whole country freedom not

possible / practicable

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World Organisation for Animal Health

12 rue de Prony75017 Paris, France

Tel: 33 (0)1 44 15 18 88 Fax: 33 (0)1 42 67 09 87

Email: oie@oie.inthttp://www.oie.int